Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Irish srón
Proto-Celtic *srognā (inherited)
Welsh ffroen (cognate)

Breton fri (cognate)
Irish srón (inherited)
Scottish Gaelic sròn (inherited)
Manx stroin (mention)
Old Irish srónmar (suffix)